Mechanism for converting continuous rotary motion into intermittent rotary motion



No. 608,573. Patented Aug. 9, I898. J. A. BURDEN.

MECHANISM FOR CONVERTING CONTINUOUS ROTARY MOTION INTO INTERMITTENTROTARY MOTION.

(Application filed Dec. 16, 1897.)

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No. 608,573. Patented Aug. 9, I898.

.1. A. BURDEN. MECHANISM FOR CONVERTING CONTINUOUS ROTARY MOTION INTOINTERMITTENT ROTARY MOTION.

(Application filed Dec. 16, 1897.)

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No. 608,573. Y Patanted Aug. 9, I898.

J. A. BURDEN..

MECHANISM FOR OONVERTING CONTINUOUS ROTARY IIIOTION INTO INTERNIITTENTROTARY NOTION.

(Applintion filed 1m. 10; 1897.) (No Model.) 3 Sheets-Sheet 3.

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UNITED-STAT PATENT Games.

JAMES A. BURDEN, OF TROY, NEI/V YORK.

MECHANISM FOR CONVERTING CONTINUOUS ROTARY MOTION INTO INTERMITTENTROTARY MOTION.

SPECIFICATION forming part of Letters Patent No. 608,573, dated August9, 1898. Application filed December 16 1189']. Serial 1T0. 662,141 (Nomodel.)

To ctZZ whom it may concern.-

State of New York, have invented a new and useful Mechanism forConverting Continuous Rotary Motion into Intermittent Rotary Motion, ofwhich the following is a specification.

'My' invention relates to a mechanism whereby rotary shaft motion which.is con.-

tinuous when actuated may be utilized to produce intermittent rotarymotion and in such a manner that when applied to heavy machinery it canbe used without jarring or concussion at the intervening periods ofmotion and rest. Myimproved means for accomplishing these results aremore particularly adapted to be used in connection with thecontinuouslymovingfdriving shaft of machines producing horseshoes from abar of iron by a series of connected operations, although it may be usedin other kinds of machinery where like movements are called for.

In carrying out the purposes of my invention a gear-wheel mounted upon aproper shaft and arranged to meshinto a spunwheel is used, and this gearwheelis arranged to intermittently move the spur-wheel at regularintervalsby the following means: There are constructed upon each of theopposite sides of this gear wheel arms radially extended therefrom so asto project beyond the perimeter of the gear-wheel, and upon adriving-shaft which moves continuously when ac tuated there are arrangedtwo cams which are keyed to said shaft, each of thesecams being thecounterpart of the other in camengaging surface, but each of which ismounted upon said shaft with its cam-engaging surfaces oppositelyplaced, one of these cams acting as a motor-cam and in'such a manner asto engage with one of the arms where extending beyond the edge of thegearwheel, upon one side of the latter, and to so move the gear-wheel,while the other cam upon the opposite'side of itwill engage with one ofthe arms thereat and thus regulate the movement of the gear-wheel asactuated by the motor-cam to'pre'vent "its acquiring momentumand tosteady its action and so soon as the arms have passed from off the motorand steadying cam a pivoted lever actuated byfa cam-groove formed in theface of a wheel on the continuously-moving shaft causes a springstop-pin to rise and to elastically engage with one of the arms to stopthe gearwheel, while at the same instant a pawl on the frame supportingthe shaft of the gear- Wheelshaf t en gages with a ratchet-wheel on thehub ofthe gear-wheel to prevent the spring on the stop-pin fromreversing the gear-wheel.

Accompanying this specification to form a part of it there are threesheets of drawings containing six figures illustrating my invention withthe same designation of parts by letter reference used in all of them.

Of the illustrations, Figure 1 is a side elevation of the apparatus,with the frame supporting the spur-gear shaft shown as broken out toillustrate the parts back of it. Fig. 2 is a side elevation of the samemechanism shown at Fig. 1, but with the side opposite to that shown at'Fig. 1 facing the view and with parts of the gear-wheel and spur-wheelwhere meshing into each other shown in section, and illustrating abeveled-gear connection made with the spur-wheel. (Not shown at Fig.1.)Fig. 3 is an end elevation of the part of the apparatus showing thegear-wheel, taken in section between its radial arms, with thecontinuously-moving shaft part shown in side elevation, with thearm-motor cam and the arm-steadying cam and the cam operating thepivoted lever to raise the stop-pin shown in end elevation. Figs. 4 and5 are vertical sections of the spring stop-pin and frame in which it isoperated to rise and fall by the action of the pivoted. lever actuatingit, it being shown at Fig. at as raised and in a position to engage withone of the radial arms of the gear-wheel and at Fig. 5 as having engagedwith one of said arms. Fig. 6 is a perspective of the stop-pin and itsslide-plate removed from the slide in which it is'operated by thepivoted lever.

The several parts of the apparatus thus illustrated are designated byletter reference,

and the function offtheparts is described as follows:

The letter O designates the continuouslymoving driving-shaft, and A thearm-actuating or motor cam secured torso as to turn its spur-wheel.

J designates beveled or miter gears transferring motion from thespur-wheelfto the shaft R, journaling in the frame S.

The letter K designates the shaft of the gear-wl1eel D, and G the radialarms arranged on one side of the latter, and l the radial arms arrangedupon the other side.

The letter M designates a wheel secured to the shaft 0, having aeam-groove formed in its side.

The letter I1 designates a lever, one end of which is provided with acam-roller (7 adapted to run in the cam-groove formed in the inside faceof the wheel M, and the letter designates a pedestal in which this leverL is centrally pivoted. This lever L at its end opposite to that whereactuated by the camgroove has mounted thereon a pin 11*, arranged tomove up and down in the recess (Z, formed in the slide-plate 1, so as tomove the latter and the pin N upwardly and downwardly in a slidewayformed in the inclined stand 0, as actuated by the engagement of saidlever with the cam-groove The letters T designate a ratchet-wheelarranged on the hub of the spur-wheel l), and \V a pawl pivoted. to thestandards 7;, in which the shaft K journals.

The letter U designates a leafspring arranged on the side of thestop-pin N.

The operation of the mechanism thus described is as follows: The shaft Cbeing actuated to turn in the direction of the arrow shown thereon atFig. 1 wit-h continuous motion, the cam A, secured thereto, will engagewith the curved end 71. of that one of the arms (l which is nextadjacent, and by such engagement will actuate the gear-wheel D to turnand also rotate the spur-wheel while this engagement of the cam A andthe arm G continues. Vhen the cam A commences to engage with theadjacent arm G, the gearwheel moves slowly, but increases in speed. fromthe shape of the cam-surface the engagement continues, and this wouldtend to give to the gcarwl1cel a momentum and impetus not desirable; butto remedy this condition while the motor-cam is operating the arm G onits more acute surfaces one of the arms ll commences to run on thereverselyarranged surface of the cam l ,which prevents the gear-wheclfrom taking on. momentum. \Yhen the engagement of the cams A and l, withthe arms has ceased, the pivoted lever L, as actuated by the cam-grooveg actnatcs the plate 1 and causes the spring stop-pin N to rise in theslideway formed. in the incline O, with the spring u elasticallyengaging with one of the arms G to stop the gear-wheel, and the instantthe stop is thus made the ratchetwheel T and pawl \V engage to hold thegearwheel at rest.

As illustrated at Fig. 1, while the motoream A is engaging with the armG at the commencement of the cam curve a to move the gear-wheel D theouter end of the next adjacent and following arm ll commences to run onthat surface of the cam 13 at a which is just the reverse of that on thecam A operating the arm G; but this engagement of the arm It and cam 13,(indicated at (1. it will be seen, is only one of sliding contactwithout propulsion, and it thus acts to steady the movement of the wheel.l), so as to prevent it from acquiring moment-um, as the acceleratingpitch of the cam A acts with increasing speed on the arm G, with the armIf and cam L acting as a brake. The arms G upon one side of thgear-wheel l), as shown in this instance of their use, are arranged atregular distances apart, thus dividing the perimeter of the wheel intosix equal parts,with the camengaging curved end edges h of these arms Gdiametrically in line with each other and the center of the gear-wheelD, and the arms ll, of which in this instance of their use there aresix, arranged upon the gear-wheel l), on the side opposite to thoseindicated at G, and these arms II are arranged on the gear-wheel l),with their cam-engaging end edges e diametrically in line with thecenter of the gearwheel D; but each of these arms ll. is arranged enoughnearer to that one of. thearms G with which it cooperates than the nextadjacent arm II to have each cooperating pair of arms G and 1t operatedupon simultaneously by the oppositely-fuelngcams A and .13, actuated bythe same shaft (,1. As thus eonstructcd each simultaneoi'is engagementof the cams A and l) with each adjacent pair of arms G and IT, as beforedescribed, moves the gear-wheel l) one-sixth of a revolution andactuates the spur-wheel and its connection half a turn.

\Vhile I have shown and described the radially-arranged arms G upon thegear-wheel D as actuated by the cam A upon the continously-moving shaft(11, in connection with the arms ll and cam B, if desired the two latterfactors may be omitted in light-running machinery and the lever L, thespring stoppin N, with the ratchet-wheel 'l and pawl \V, used inconnection with the arms G and cam. A with the cam ll and arm ill.

As thus constructed and arranged to be operated heavy or light runningmachinery may be operated with regular intermittent periods of motionand rest and when applied to ponderous machinery all jamming or concussion consequent upon starting and stopping is avoided.

llaving thus described my invention, what I claim, and desire to secureby Letters latent, its-- 1. A gear-wheel having bearings in. which tojournal and provided with a spur-wheel into which it; meshes;radially-arranged arms constructed upon one of the gear-wheel sides; adriving-shaft adapted to be rotated continuously; a cam on saiddriving-shaft, constructed to engage in sequence with each of said armsto move it, and the gear-wheel part of a turn, at eachrevolution of saiddrivingshaft; and a spring stop-pin operated by said driving-shaft toengage with one of said arms to arrest and limit the measure of movementmade by said gear-wheel, and then to disengage therefrom, substantially.as shown and described.

2. The combination with a gear-wheel provided with bearings in which tojournal, and having a spur-wheel into which it meshes; ofradially-arranged arms constructed upon one side of said gear -wheel; adriving shaft adapted to be rotated continuously; a cam on saiddriving-shaft, constructed to engage in sequencewith each one of saidarms to move it, and the gear-wheel part of a turn at each revolution ofsaid driving-shaft a spring stop-pin operated by said driving-shaft toarrest and limit the measure of each of the movements made by the armand gear-wheel; and a ratchet-wheel arranged'on the gearwheel hub, andprovided with a pawl whereby the detention of the gear-wheel at eachperiod of rest may be positive, substantially as and for the purposesset forth.

3. In a mechanism for converting continuous rotary motion intointermittent rotary motion, the combination with a gear-wheel havingbearings in which to journal, and a spur-wheel into which it meshes; ofradiallyarranged arms on each side of said gearwheel; a driving-shaftadapted to turn with continuous rotation, and provided with two cams,one of the latter adapted to engage with one of said arms to'move it,and said gearwheel a part of a turn at each revolution of said shaft;and the other cam to make a sliding contact with one of the radial armsupon the other side of the gear-wheel to act as a brake; a springstop-pin operated by said shaft to arrest and limit each movement of thegear-wheel; and a ratchet-wheel arranged on the hub of the latter, andprovided with a pawl adapted to detain the wheel as arrested in movementby the spring stop-pin,

substantially as shown and described.

4. The combination with a gear-wheel having bearings in which tojournal, and a spur wheel into which it meshes; of radially-arrangedarms constructed upon each-side of said gear-wheel, substantially asdescribed; adriving-shaft adapted to be rotated continuously; two camseach provided with the same curvature of cam-surface; but mountedacquiring momentum, substantially as shown and described. t

5. The combination with the gear-wheel D, having the spur-wheelf, intowhich it meshes, and constructed with the radially-arranged arms G, uponone of its sides; of the driving shaft O, adapted to be rotatedcontinuously; the cam A, mounted uponsaid driving-shaft and constructedsubstantially as described; the incline O, the stop-pin N, mounted inthe latter; the lever L, and the cam-groove wheel M, mounted upon thedriving shaft, constructed and arranged to be operated substantially inthe manner as and for the purposes set forth.

6. The combination with the gear-wheel D, having the spur-wheelf, intowhich it meshes, and constructed with the radially-arranged arms G, uponone of its sides, of the drivingshaft 0, adapted to be rotatedcontinuously; the cam A, mounted upon said driving-shaft and constructedsubstantially as described; the incline O; the stop-pin N, mounted inthe latter; the lever L, the cam-groove wheel M, mounted on said shaft,and the ratchet T, and pawl W, constructed and arranged to be operatedsubstantially in the manner as and for the purposes set forth.

7. The combination with the shaft 0, arranged to be actuated withcontinuous rotation; of the cams A and B, mounted thereon relativelyconstructed and positioned, substantially as described; the gear-wheelD,having the spur-wheel f, into which it meshes, and provided with theradially-arranged arms G, mounted upon one of its sides, and theradially-arranged arms H, upon the other side; the incline O, and thestop-pin N, mounted in the latter, constructed and arranged to beoperated substantially in the manner as and for the purposes set forth.

8. The combination with the shaft 0, arranged to be actuated withcontinuous rotation; of the cams A and B, mounted thereon and'relativelypositioned and constructed, substantially as described; the gear-wheelD, having the spur-wheel f, into which it meshes, and provided with theradially-arranged arms G, mounted upon one of its sides, and theradially-arranged arms H, upon the other side, and the ratchet-wheel T,arranged on the gear- Wheel hub, and provided with a pawl, the inclineO, and the stop-pin N, arranged in the latter, constructed and arrangedto operate,

stantially as described; of the gear-wheel D,

meshing into the spur-wheel f, and having mounted upon one of its sidesthe radiallyarranged arms G, and upon the other side,

the radially-arranged arms H; the incline O,

the stop-pin N, mounted to slide in the latter;

the lever L, and the cam-groove wheel M,

mounted on the driving-shaft, constructed and arranged to operatesubstantially in the manner as and for the purposes set forth.

10. The combination with the continuouslymoving shaft 0, having mountedthereon the cams A, and 13, each constructed and positioned thereonrelatively to each other, substantially as described; of the gear-WheelD, meshing into the spurovheel f, and having mounted upon one of itssides the radiallyarrang'ed arms G, and upon the other side theradially-arranged arms II; the ineline O, the stop-pin N, mounted toslide in the latter; the

